C9900-E301 BECKHOFF 2-Port RS232 PCIe Interface Module

Product Overview

The C9900-E301 (C9900-E301) is a high-performance industrial PCIe expansion module designed to provide dual-channel serial communication for Beckhoff Industrial PCs (IPCs). This module is engineered to expand the connectivity of control systems in sectors such as semiconductor manufacturing, advanced robotics, and legacy system integration. Supporting high-speed transmission rates up to 921,600 bps, the C9900-E301 allows IPCs to interface reliably with specialized sensors, barcode readers, and serial field devices. By utilizing a compact internal structure with ix type B sockets, it maintains a high-density footprint within the IPC chassis, ensuring robust data throughput and signal integrity for critical serial automation tasks.

Technical Configuration

The C9900-E301 utilizes the PCIe (PCI Express) bus architecture to ensure low-latency communication between the CPU and the serial ports. Unlike standard serial cards, this industrial module features two specialized ix type B sockets rather than traditional D-sub connectors directly on the bracket. This design prioritizes vibration resistance and space efficiency. To interface with standard serial hardware, the module must be used with two C9900-K920 adapter cables, which convert the ix type B connection to a standard 9-pin D-sub (RS232) interface. The hardware supports full-duplex transmission and is fully compatible with Windows-based industrial operating systems and TwinCAT real-time communication protocols.

Technical Specifications

Technical FAQs

Is the C9900-E301 compatible with standard commercial PCs?

While the C9900-E301 uses a standard PCIe slot, it is specifically validated and designed for use within Beckhoff Industrial PC environments. Optimal performance and driver support are guaranteed when integrated into CX or C-series IPCs.

Why does this module use ix type B connectors instead of D-sub 9?

The ix type B connector is an industrial-grade interface that is significantly smaller and more rugged than a standard D-sub connector. This allows Beckhoff to provide dual-port functionality on a single-slot bracket while ensuring a secure, click-lock connection that is resistant to high-vibration industrial environments.

Does the module come with the necessary adapter cables?

No, the C9900-E301 requires the separate purchase of two C9900-K920 cables to convert the internal ix type B sockets to the industry-standard D-sub 9-pin RS232 format.

Engineering & Installation Guide

Cable Management and Connectivity:

When installing the C9900-E301, ensure the C9900-K920 adapter cables are properly seated until the "click" mechanism of the ix type B connector engages. This mechanical lock is vital in preventing signal loss due to vibration. Route the D-sub ends of the cables away from high-voltage AC lines or frequency inverters to minimize electromagnetic interference on the RS232 signal path.

PCIe Slot Installation and ESD Safety:

This module is a sensitive electronic component. Always wear an ESD (Electrostatic Discharge) wrist strap and ensure the IPC is fully powered down before opening the chassis. Insert the card into a vacant PCIe slot and secure the bracket screw to ensure a proper chassis ground connection. After installation, verify the port assignments in the BIOS or Device Manager to ensure the system has correctly enumerated the two new COM ports.

Software Integration (TwinCAT/Windows):

In most Beckhoff IPC environments, the RS232 ports will be recognized as standard COM ports. For real-time serial communication within TwinCAT, use the "Serial Communication" library. Ensure the baud rate, parity, and stop bits are configured to match your peripheral device; the C9900-E301 can handle high-speed rates up to 921.6 kbps, which may require high-quality shielded cabling for the external D-sub run to maintain data integrity.